• Maxon Cinema 4D

  Depth pass ignoring material’s alphas

  Posted by Jon Buttry on July 26, 2010 at 9:05 pm

  Hello, I have a scene set up with multiple square planes, each of which have a raster material assigned to them that has an alpha channel which mimics the raster art in the color channel.

  Example:
  https://litteritcher.com/ms/dof3.png
  https://litteritcher.com/ms/dof4.png

  This renders fine as an RGB image – https://litteritcher.com/ms/dof2.jpg – , but when I try to do a depth pass or use other features, the alpha from the material is ignored and the entire square plane is used to create the effect – https://litteritcher.com/ms/dof1.jpg – .

  Is there a way to get cinema to use that material’s alpha when calculating a depth pass? I have also tried the “depth of field” effect, rather than doing a pass, but the alpha issue is present there as well.

  Thanks!! – Jon

  Brian Jones replied 15 years, 9 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Brian Jones

  July 27, 2010 at 4:39 pm

  AR DOF has that problem. There are a couple plugins – ZBlur and enDOFin that can properly deal with alpha.

  A tut here that shows a method (time intensive) to do DOF a different way – https://www.per-anders.net/tutorials/tutorials.php?index=7

  and there is a photoshop method which I’ve read described as “All you need is a cam, an ambient illumination light with near and far clip (rear blur and front blur) enabled and a 100% pure white material.” but I don’t know the trick since I’ve never needed it. Somebody knows though.

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